Z89323 Zilog., Z89323 Datasheet - Page 57
Z89323
Manufacturer Part Number
Z89323
Description
16-BIT DIGITAL SIGNAL PROCESSORS
Manufacturer
Zilog.
Datasheet
1.Z89323.pdf
(61 pages)
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DS95DSP0101 Q4/95
REGISTERS
INTERNAL
EXECUTE
RESET
EXT0-15
RD//WR
PA0-15
RAM/
/RESET
CLOCK
UO0-1
EA0-2
PROGRAM
PROGRAM
ADDRESS
/DS
DATA
CLOCK
Cycle 0
PAVALID
Figure 49. External Program Memory Port Timing
RSET
Cycle 1
RWIDTH
TCY
Valid
PDSET
P R E L I M I N A R Y
Figure 48. RESET Timing
TCY
Cycle 2
Valid
Tri-Stated
Cycle 3
Tri-Stated
RRISE
PDHOLD
Intact*
Valid
Access Reset Vector
Cycle 4
* The RAM and hardware registers are left intact
during a warm reset. A cold reset will produce
random data in these locations. The status
register is set to zeroes in both cases.
Valid
Cycle 5
Code Exec
Valid
16-B
Valid
IT
D
IGITAL
S
IGNAL
Z89323/373/393
P
ROCESSORS
57
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